Home / 1,308,828-1,806,205.20-728,097.50

Finding the Fourth Proportional to 1,308,828, 1,806,205.20 and 728,097.50

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Solution

The fourth proportional to 1,308,828, 1,806,205.20 and 728,097.50 is: 1,004,787.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,828 : 1,806,205.20 = 728,097.50 : x
  2. Step 2: Convert to fraction form
    1,308,828/1,806,205.20 = 728,097.50/x
  3. Step 3: Cross multiply
    1,308,828x = 1,806,205.20 × 728,097.50
  4. Step 4: Simplify right side
    1,308,828x = 1,315,093,490,607
  5. Step 5: Solve for x
    x = 1,315,093,490,607/1,308,828
  6. Step 6: Final answer
    x = 1,004,787.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.